Vacuum loss detection
US9870885B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 11, 2015 |
| Grant date | Jan 16, 2018 |
| Priority date | — |
| Expiry date | Feb 18, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H33/66207
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Techniques for detecting vacuum loss in a vacuum interrupter are disclosed. For example, a sensing system of a vacuum interrupter includes a sensor including a material that oxidizes in the presence of air and is at least partially positioned in an evacuated space of a vacuum interrupter, the sensor being configured to produce an indication of impedance of the material; and a control system coupled to the sensor, the control system including an electronic processor and an electronic storage that stores instructions that, when executed, cause the electronic processor to access an indication of impedance produced by the sensor, determine a measure of impedance of the material of the sensor based on the accessed indication of impedance, and determine a condition of the evacuated space based on the determined measure of impedance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.